A particular triplet of bases in the template strand of DNA is 5'-AGT-3'.The corresponding codon for the mRNA transcribed is

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The triplet of bases 5'-AGT-3' codes for the amino acid serine. In mRNA, the complementary base pairs are used, so the codon would be 3'-UCA-5'. Option A is the only choice that matches this codon. Option B (3'-UGA-5') is a stop codon and does not code for any amino acid. Option C (5'-TCA-3') is the complementary sequence of the codon and is not a valid option. Option D (3'-ACU-5') is also the complementary sequence of the codon and would code for threonine, not serine.

A Particular Triplet of Bases in the Template Strand of DNA